INSTALLATION
Maintenance
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16. Maintenance
WARNING Electrocution
f Prior to commencing any service or cleaning work,
isolate the appliance across all poles from the
power supply.
Following disconnection from the power supply, parts of
the appliance may remain energised for 2minutes until
the inverter capacitors have discharged.
We recommend a regular inspection (to establish the current con-
dition of the system), and maintenance if required (to return the
system to its original condition).
1.
2.
1
D0000037831
1 Inspection port
f Open the inspection port.
f Check the condensate drain (visual inspection). Remove any
contaminants and blockages immediately.
Material losses
Keep the air discharge and intake apertures free from
snow and ice.
Remove any leaves or other foreign bodies from the evaporator
fins periodically.
17. Troubleshooting
WARNING Electrocution
f Before working on the appliance, isolate it from the
power supply at the control panel.
Following disconnection from the power supply, parts of
the appliance may remain energised for 2minutes until
the inverter capacitors have discharged.
Note
Please observe the instructions for the heat pump man-
ager.
If the fault cannot be located during a service using the heat pump
manager, open the control panel as an emergency measure and
check the settings of the IWS (integrated heat pump control unit).
17.1 Checking the IWS DIP switch settings
Carry out the following steps to make the IWS accessible.
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f Remove the cover.
D0000082266
1
1 IWS
IWS
BA
D0000063997
1
4
3
2
1 Reset button
2 DIP switch (WP-Typ)
3 DIP switch (BA)
4 LEDs
DIP switch (WP-Typ)
The DIP switch (WP-Typ) on the IWS serves to set the relevant
heat pump type.
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